Seasonal succession and spatial distribution of bacterial community structure in a eutrophic freshwater Lake, Lake Taihu

被引：112

作者：

Zhu, Congmin ^{[1
,2
,3
,10
]}

Zhang, Junyi ^{[4
,5
]}

Nawaz, Muhammad Zohaib ^{[6
,7
,8
]}

Mahboob, Shahid ^{[9
]}

Al-Ghanim, Khalid A. ^{[9
]}

Khan, Iqrar Ahmad ^{[7
]}

Lu, Zuhong ^{[4
]}

Chen, Ting ^{[10
,11
]}

机构：

[1] MOE Key Lab Bioinformat, Bioinformat Div, Beijing, Peoples R China

[2] Ctr Synthet & Syst Biol, Beijing, Peoples R China

[3] Tsinghua Univ, Dept Automat, Natl Res Ctr Informat Sci & Technnol, Beijing 100084, Peoples R China

[4] Southeast Univ, Sch Biol Sci & Med Engn, State Key Lab Bioelect, Nanjing 210096, Jiangsu, Peoples R China

[5] Wuxi Environm Monitoring Ctr, Wuxi 214121, Peoples R China

[6] Univ Agr Faisalabad, Dept Comp Sci, Faisalabad 38040, Pakistan

[7] Univ Agr Faisalabad, Ctr Adv Studies Agr & Food Secur, Faisalabad 38040, Pakistan

[8] Wuxi Metagene Sci & Technol Co Ltd, Wuxi, Peoples R China

[9] King Saud Univ, Dept Zool, Coll Sci, Riyadh, Saudi Arabia

[10] Tsinghua Univ, Inst Artificial Intelligence, Dept Comp Sci & Technol, State Key Lab Intelligent Technol & Syst, Beijing 100084, Peoples R China

[11] Tsinghua Univ, Beijing Natl Res Ctr Informat Sci & Technol, Tsinghua Fuzhou Inst Digital Technol, Beijing 100084, Peoples R China

来源：

SCIENCE OF THE TOTAL ENVIRONMENT | 2019年 / 669卷

基金：

中国国家自然科学基金;

关键词：

Cyanobacterial blooms; Bacterial community; 16S rRNA gene; Seasonal succession; Spatial distribution; Driving factors; MICROCYSTIS SPP. BLOOMS; SHALLOW LAKE; BACTERIOPLANKTON; PHYTOPLANKTON; PICOCYANOBACTERIA; TEMPERATURE; AERUGINOSA; DIVERSITY; NITROGEN; HETEROGENEITY;

D O I：

10.1016/j.scitotenv.2019.03.087

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In aquatic ecosystems, both phytoplankton and bacteria play pivotal roles. Based on 16S rRNA gene sequencing, considerable research focused on phytoplankton colony attached and free-living bacteria has revealed the close relationship between them, and indicated that the entire bacterial community mediates crucial biogeochemical processes in aquatic ecosystems. However, our understanding of their distribution patterns and response to environmental factors remains poor. Besides, picocyanobacteria, which were omitted from attached bacteria analysis, were reported to be important in cyanobacterial blooms. To explore the spatiotemporal variation of the entire bacterial community with their driving environmental factors and detect the relationships among them, we collected 61water samples spanning one year and the entire Lake Taihu regions for surveying the entire bacterial community. Our results indicated: 1) seasonal variation of the bacterial community composition was stronger than spatial variation due to the clearly seasonal variation of Microcystis, Synechococcus (picocyanobacteria) and other bacteria (Actinomycetales, Pirellulaceae and Sphingobacteriaceae); 2) the spatial distribution of the bacterial community showed that different phylawere dominant in different regions; 3) the bacterial co-occurrence networks varied seasonally andwere dominated byMicrocystis, ACK-M1, Chthoniobacteraceae, Synechococcus, Pirellulaceae and Pelagibacteraceae; 4) phytoplankton density, chlorophyll a, water temperature and total nitrogen were the major factors that drove the spatiotemporal variation of bacterial community composition. This study revealed the seasonal succession and spatial distribution of the entire bacterial community in Lake Taihu, providing newinsights into the relationship betweenwater bloom-forming cyanobacterial species and other bacteria, and their response to environmental factors in eutrophic freshwater ecosystem. Published by Elsevier B.V.

引用

页码：29 / 40

页数：12